<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<title>three.js css3d - 元素周期表</title>

<!-- 参考学习资料 https://flowers1225.com/lessons/2015/12/08/1 -->
<style>
html, body {
	height: 100%;
}

body {
	background-color: #68217A;
	margin: 0;
	font-family: Helvetica, sans-serif;;
	overflow: hidden;
}

a {
	color: #ffffff;
}

#info {
	position: absolute;
	width: 100%;
	color: #ffffff;
	padding: 5px;
	font-family: Monospace;
	font-size: 13px;
	font-weight: bold;
	text-align: center;
	z-index: 1;
}

#menu {
	position: absolute;
	bottom: 20px;
	width: 100%;
	text-align: center;
}

.element {
	width: 120px;
	height: 160px;
	box-shadow: 0px 0px 12px rgba(0,255,255,0.5);
	border: 1px solid rgba(127,255,255,0.25);
	text-align: center;
	cursor: default;
}

.element:hover {
	box-shadow: 0px 0px 12px rgba(0,255,255,0.75);
	border: 1px solid rgba(127,255,255,0.75);
}

	.element .number {
		position: absolute;
		top: 20px;
		right: 20px;
		font-size: 12px;
		color: rgba(127,255,255,0.75);
	}

	.element .symbol {
		position: absolute;
		top: 40px;
		left: 0px;
		right: 0px;
		font-size: 60px;
		font-weight: bold;
		color: rgba(255,255,255,0.75);
		text-shadow: 0 0 10px rgba(0,255,255,0.95);
	}

	.element .details {
		position: absolute;
		bottom: 15px;
		left: 0px;
		right: 0px;
		font-size: 12px;
		color: rgba(127,255,255,0.75);
	}

button {
	color: rgba(127,255,255,0.75);
	background: transparent;
	outline: 1px solid rgba(127,255,255,0.75);
	border: 0px;
	padding: 5px 10px;
	cursor: pointer;
}
button:hover {
	background-color: rgba(0,255,255,0.5);
}
button:active {
	color: #000000;
	background-color: rgba(0,255,255,0.75);
}
</style>
</head>
<body>
<script src="js/three.min.js" ></script>
<script src="js/tween.min.js"></script>
<script src="js/TrackballControls.js"></script>
<script src="js/CSS3DRenderer.js"></script>

<div id="container"></div>
<div id="info"><a href="http://threejs.org" target="_blank">three.js css3d</a> - 元素周期表. <a href="http://www.htmleaf.com/" target="_blank">info</a>.</div>
<div id="menu">
<button id="table">TABLE</button>
<button id="sphere">SPHERE</button>
<button id="helix">HELIX</button>
<button id="grid">GRID</button>
<button id="holdon">HOLDON</button>
<button id="moveCamera">moveCamera</button>
<button id="start">开始抽奖</button>
<button id="stop">停</button>

</div>

<script type="module">
	import * as THREE2 from './js/three.module.js';
	import Stats from './js/stats.module.js';



	var table = [
		"曹", "曹志坚", "2017010277", 1, 1,
		"耿", "手工耿", "4.002602", 18, 1,
		"Li", "Lithium", "6.941", 1, 2,
		"Be", "Beryllium", "9.012182", 2, 2,
		"B", "Boron", "10.811", 13, 2,
		"C", "Carbon", "12.0107", 14, 2,
		"N", "Nitrogen", "14.0067", 15, 2,
		"O", "Oxygen", "15.9994", 16, 2,
		"F", "Fluorine", "18.9984032", 17, 2,
		"Ne", "Neon", "20.1797", 18, 2,
		"Na", "Sodium", "22.98976...", 1, 3,
		"Mg", "Magnesium", "24.305", 2, 3,
		"Al", "Aluminium", "26.9815386", 13, 3,
		"Si", "Silicon", "28.0855", 14, 3,
		"P", "Phosphorus", "30.973762", 15, 3,
		"S", "Sulfur", "32.065", 16, 3,
		"Cl", "Chlorine", "35.453", 17, 3,
		"Ar", "Argon", "39.948", 18, 3,
		"K", "Potassium", "39.948", 1, 4,
		"Ca", "Calcium", "40.078", 2, 4,
		"Sc", "Scandium", "44.955912", 3, 4,
		"Ti", "Titanium", "47.867", 4, 4,
		"V", "Vanadium", "50.9415", 5, 4,
		"Cr", "Chromium", "51.9961", 6, 4,
		"Mn", "Manganese", "54.938045", 7, 4,
		"Fe", "Iron", "55.845", 8, 4,
		"Co", "Cobalt", "58.933195", 9, 4,
		"Ni", "Nickel", "58.6934", 10, 4,
		"Cu", "Copper", "63.546", 11, 4,
		"Zn", "Zinc", "65.38", 12, 4,
		"Ga", "Gallium", "69.723", 13, 4,
		"Ge", "Germanium", "72.63", 14, 4,
		"As", "Arsenic", "74.9216", 15, 4,
		"Se", "Selenium", "78.96", 16, 4,
		"Br", "Bromine", "79.904", 17, 4,
		"Kr", "Krypton", "83.798", 18, 4,
		"Rb", "Rubidium", "85.4678", 1, 5,
		"Sr", "Strontium", "87.62", 2, 5,
		"Y", "Yttrium", "88.90585", 3, 5,
		"Zr", "Zirconium", "91.224", 4, 5,
		"Nb", "Niobium", "92.90628", 5, 5,
		"Mo", "Molybdenum", "95.96", 6, 5,
		"Tc", "Technetium", "(98)", 7, 5,
		"Ru", "Ruthenium", "101.07", 8, 5,
		"Rh", "Rhodium", "102.9055", 9, 5,
		"Pd", "Palladium", "106.42", 10, 5,
		"Ag", "Silver", "107.8682", 11, 5,
		"Cd", "Cadmium", "112.411", 12, 5,
		"In", "Indium", "114.818", 13, 5,
		"Sn", "Tin", "118.71", 14, 5,
		"Sb", "Antimony", "121.76", 15, 5,
		"Te", "Tellurium", "127.6", 16, 5,
		"I", "Iodine", "126.90447", 17, 5,
		"Xe", "Xenon", "131.293", 18, 5,
		"Cs", "Caesium", "132.9054", 1, 6,
		"Ba", "Barium", "132.9054", 2, 6,
		"La", "Lanthanum", "138.90547", 4, 9,
		"Ce", "Cerium", "140.116", 5, 9,
		"Pr", "Praseodymium", "140.90765", 6, 9,
		"Nd", "Neodymium", "144.242", 7, 9,
		"Pm", "Promethium", "(145)", 8, 9,
		"Sm", "Samarium", "150.36", 9, 9,
		"Eu", "Europium", "151.964", 10, 9,
		"Gd", "Gadolinium", "157.25", 11, 9,
		"Tb", "Terbium", "158.92535", 12, 9,
		"Dy", "Dysprosium", "162.5", 13, 9,
		"Ho", "Holmium", "164.93032", 14, 9,
		"Er", "Erbium", "167.259", 15, 9,
		"Tm", "Thulium", "168.93421", 16, 9,
		"Yb", "Ytterbium", "173.054", 17, 9,
		"Lu", "Lutetium", "174.9668", 18, 9,
		"Hf", "Hafnium", "178.49", 4, 6,
		"Ta", "Tantalum", "180.94788", 5, 6,
		"W", "Tungsten", "183.84", 6, 6,
		"Re", "Rhenium", "186.207", 7, 6,
		"Os", "Osmium", "190.23", 8, 6,
		"Ir", "Iridium", "192.217", 9, 6,
		"Pt", "Platinum", "195.084", 10, 6,
		"Au", "Gold", "196.966569", 11, 6,
		"Hg", "Mercury", "200.59", 12, 6,
		"Tl", "Thallium", "204.3833", 13, 6,
		"Pb", "Lead", "207.2", 14, 6,
		"Bi", "Bismuth", "208.9804", 15, 6,
		"Po", "Polonium", "(209)", 16, 6,
		"At", "Astatine", "(210)", 17, 6,
		"Rn", "Radon", "(222)", 18, 6,
		"Fr", "Francium", "(223)", 1, 7,
		"Ra", "Radium", "(226)", 2, 7,
		"Ac", "Actinium", "(227)", 4, 10,
		"Th", "Thorium", "232.03806", 5, 10,
		"Pa", "Protactinium", "231.0588", 6, 10,
		"U", "Uranium", "238.02891", 7, 10,
		"Np", "Neptunium", "(237)", 8, 10,
		"Pu", "Plutonium", "(244)", 9, 10,
		"Am", "Americium", "(243)", 10, 10,
		"Cm", "Curium", "(247)", 11, 10,
		"Bk", "Berkelium", "(247)", 12, 10,
		"Cf", "Californium", "(251)", 13, 10,
		"Es", "Einstenium", "(252)", 14, 10,
		"Fm", "Fermium", "(257)", 15, 10,
		"Md", "Mendelevium", "(258)", 16, 10,
		"No", "Nobelium", "(259)", 17, 10,
		"Lr", "Lawrencium", "(262)", 18, 10,
		"Rf", "Rutherfordium", "(267)", 4, 7,
		"Db", "Dubnium", "(268)", 5, 7,
		"Sg", "Seaborgium", "(271)", 6, 7,
		"Bh", "Bohrium", "(272)", 7, 7,
		"Hs", "Hassium", "(270)", 8, 7,
		"Mt", "Meitnerium", "(276)", 9, 7,
		"Ds", "Darmstadium", "(281)", 10, 7,
		"Rg", "Roentgenium", "(280)", 11, 7,
		"Cn", "Copernicium", "(285)", 12, 7,
		"Uut", "Unutrium", "(284)", 13, 7,
		"Fl", "Flerovium", "(289)", 14, 7,
		"Uup", "Ununpentium", "(288)", 15, 7,
		"Lv", "Livermorium", "(293)", 16, 7,
		"Uus", "Ununseptium", "(294)", 17, 7,
		"Uuo", "Ununoctium", "(294)", 18, 7,

	];

	var camera, scene, renderer;
	var controls;

	var objects = [];
	var targets = { table: [], sphere: [], helix: [], grid: [] };
	var screenRation=window.innerWidth/window.innerHeight;
	var tableWidth=window.innerWidth;
	var tableHeight=window.innerHeight;

	//标记是否需要看某一个卡片
	var  isWatchCard=false;
	//需要相机观看的卡片
	var watchObj;
	var isStop=false;



	init();
	animate();

	function init() {

		//相机： 透视相机，近大远小（视野，长宽比，远近面）
		camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 10000 );
		camera.position.z = 3000;

		//构建场景
		scene = new THREE.Scene();



		var cameraPerspectiveHelper = new THREE.CameraHelper( camera );
		scene.add( cameraPerspectiveHelper );

		// 创建一个地板
		var planeGeometry = new THREE.PlaneGeometry(180, 180);
        var planeMaterial = new THREE.MeshLambertMaterial({color: 0xffffff});
        var plane = new THREE.Mesh(planeGeometry, planeMaterial);


        // 让地面保持水平
        plane.rotation.x = -0.5 * Math.PI;
        plane.position.x = 0;
        plane.position.y = 0;
        plane.position.z = 0;

        // 添加地板到场景中去
        scene.add(plane);

		// table

		for ( var i = 0; i < table.length; i += 5 ) {

			var element = document.createElement( 'div' );
			element.className = 'element';
			element.style.backgroundColor = 'rgba(0,127,127,' + ( Math.random() * 0.5 + 0.25 ) + ')';

			var number = document.createElement( 'div' );
			number.className = 'number';
			number.textContent = (i/5) + 1;
			element.appendChild( number );

			var symbol = document.createElement( 'div' );
			symbol.className = 'symbol';
			symbol.textContent = table[ i ];
			element.appendChild( symbol );

			var details = document.createElement( 'div' );
			details.className = 'details';
			details.innerHTML = table[ i + 1 ] + '<br>' + table[ i + 2 ];
			element.appendChild( details );

			var object = new THREE.CSS3DObject( element );
			object.position.x = Math.random() * 4000 - 2000;
			object.position.y = Math.random() * 4000 - 2000;
			object.position.z = Math.random() * 4000 - 2000;
			scene.add( object );

			objects.push( object );

			//

			var object = new THREE.Object3D();
			object.position.x = ( table[ i + 3 ] * 140 ) - 1330;
			object.position.y = - ( table[ i + 4 ] * 180 ) + 990;

			targets.table.push( object );

		}

		// sphere

		var vector = new THREE.Vector3();

		for ( var i = 0, l = objects.length; i < l; i ++ ) {

			var phi = Math.acos( -1 + ( 2 * i ) / l );
			var theta = Math.sqrt( l * Math.PI ) * phi;

			var object = new THREE.Object3D();

			object.position.x = 800 * Math.cos( theta ) * Math.sin( phi );
			object.position.y = 800 * Math.sin( theta ) * Math.sin( phi );
			object.position.z = 800 * Math.cos( phi );

			vector.copy( object.position ).multiplyScalar( 2 );
			// vector.x=0;
			// vector.y=0;
			// vector.z=0;

			object.lookAt( vector );

			targets.sphere.push( object );

		}

		// helix

		var vector = new THREE.Vector3();

		for ( var i = 0, l = objects.length; i < l; i ++ ) {

			var phi = i * 0.175 + Math.PI;

			var object = new THREE.Object3D();

			object.position.x = 900 * Math.sin( phi );
			object.position.y = - ( i * 8 ) + 450;
			object.position.z = 900 * Math.cos( phi );

			vector.x = object.position.x * 2;
			vector.y = object.position.y;
			vector.z = object.position.z * 2;

			//todo,test function lookAt()
			// vector.x=0;
			// vector.y=0;
			// vector.z=0;

			object.lookAt( vector );

			targets.helix.push( object );

		}

		// grid

		for ( var i = 0; i < objects.length; i ++ ) {

			var object = new THREE.Object3D();

			object.position.x = ( ( i % 5 ) * 400 ) - 800;
			object.position.y = ( - ( Math.floor( i / 5 ) % 5 ) * 400 ) + 800;
			object.position.z = ( Math.floor( i / 25 ) ) * 1000 - 2000;

			targets.grid.push( object );

		}

		//渲染器
		renderer = new THREE.CSS3DRenderer();
		//设置画布大小
		renderer.setSize( window.innerWidth, window.innerHeight );
		renderer.domElement.style.position = 'absolute';
		//将图像添加至body中
		document.getElementById( 'container' ).appendChild( renderer.domElement );

		//鼠标控制
		controls = new THREE.TrackballControls( camera, renderer.domElement );
		controls.rotateSpeed = 0.5;
		controls.minDistance = 500;
		controls.maxDistance = 10000;
		controls.addEventListener( 'change', render );

		var button = document.getElementById( 'table' );
		button.addEventListener( 'click', function ( event ) {

			transform( targets.table, 2000 );

		}, false );

		var button = document.getElementById( 'sphere' );
		button.addEventListener( 'click', function ( event ) {

			transform( targets.sphere, 2000 );

		}, false );

		var button = document.getElementById( 'helix' );
		button.addEventListener( 'click', function ( event ) {

			transform( targets.helix, 2000 );

		}, false );

		var button = document.getElementById( 'grid' );
		button.addEventListener( 'click', function ( event ) {

			transform( targets.grid, 2000 );

		}, false );


		//hold on 按钮事件
		var button =document.getElementById('holdon');
		button.addEventListener('click',function(event){
			randomPosition(2000);
		},false);

		//移动相机按钮事件
		var button=document.getElementById("moveCamera");
		button.addEventListener('click',function(event){
			moveCamera(objects[0],2000,20);
		},false);


		//开始抽奖按钮监听事件
		var button=document.getElementById("start");
		button.addEventListener('click',function(event){
			startPick();
		},false);

		//停止抽奖按钮监听事件
		var button=document.getElementById("stop");
		button.addEventListener('click',function(event){
			isStop=true;
		},false);


		
		//初始化完成后变成表格排列
		transform( targets.table, 10000 );

		//

		window.addEventListener( 'resize', onWindowResize, false );

	}




	//开始抽奖
	function startPick(){
	
		isStop=false;

		var current=Math.floor(Math.random()*objects.length);

		moveCamera(objects[current],1000,6);
	
		// for (let index = 0; index < 5; index++) {
		// 	current=Math.floor(Math.random()*objects.length);
		// 	//
		// 	console.log(current);
		// 	setTimeout(moveCamera(objects[current],1000),1000)
		
		// }
	

	

		// while (!isStop) {
		// 	current=Math.floor(Math.random()*objects.length);
		// 	//
		// 	console.log(current);
		// 	setTimeout(moveCamera(objects[current],1000),1000)
		// }

	}


	//移动相机
	function moveCamera(obj,duration,circle){
		watchObj=obj;
		isWatchCard=true;

		TWEEN.removeAll();

		console.log("obj.position")
		console.log(obj.position);
		console.log("camera.position")
		console.log(camera.position);
		console.log("camera.rotation")
		console.log(camera.rotation);
		// console.log(obj.Vector3);

		var vector = new THREE.Vector3();

		//计算obj的法向量
		// x=sinθ2  y=-sinθ2cosθ2 z=cosθ1cosθ2
		let theta1=obj.rotation.x;
		let theta2=obj.rotation.y;
		let theta3=obj.rotation.z;
		
		vector.x=Math.sin(theta2);
		vector.y=-Math.sin(theta1)*Math.cos(theta2);
		vector.z=Math.cos(theta1)*Math.cos(theta2);
		
		// console.log(vector);

		// var tarCameraPos= new THREE.Vector3();
		// tarCameraPos.x=obj.position.x+vector.x*500;
		// tarCameraPos.y=obj.position.y+vector.y*500;
		// tarCameraPos.z=obj.position.z+vector.z*500;
		
		var tarCameraPos = new THREE.Object3D();
		tarCameraPos.position.x=obj.position.x+vector.x*500;
		tarCameraPos.position.y=obj.position.y+vector.y*500;
		tarCameraPos.position.z=obj.position.z+vector.z*500;
		tarCameraPos.lookAt(obj.position);


		console.log('tarCamera.position');
		console.log(tarCameraPos.position);
		console.log('tarCamera.rotation')
		console.log(tarCameraPos.rotation);

		new TWEEN.Tween( camera.position )
				.to( {x:tarCameraPos.position.x, y: tarCameraPos.position.y, z: tarCameraPos.position.z},  duration )
				.easing( TWEEN.Easing.Exponential.InOut )
				.start();
				
		new TWEEN.Tween( camera.rotation )
				.to( {x:tarCameraPos.rotation.x,y:tarCameraPos.rotation.y,z:tarCameraPos.rotation.z},  duration )
				.easing( TWEEN.Easing.Exponential.InOut )
				.start();

		new TWEEN.Tween( obj.rotation )
		.to( {x:Math.PI*circle},  duration*2 )
		.easing( TWEEN.Easing.Quadratic.Out  )
		.start();

		//Quadratic.Out 
		//TWEEN.Easing.Exponential.InOut
		
		new TWEEN.Tween( this )
			.to( {}, duration * 2 )
			.onUpdate( render )
			.start();

	

	}

	/**
	* 随机卡片位置
	*/
	function randomPosition(duration){

		isWatchCard=false;
		TWEEN.removeAll();

		for ( var i = 0; i < objects.length; i ++ ) {

			var object = objects[ i ];

			new TWEEN.Tween( object.position )
				.to( { x: Math.random() * 4000 - 2000, y: Math.random() * 4000 - 2000, z:Math.random() * 4000 - 2000 }, Math.random() * duration + duration )
				.easing( TWEEN.Easing.Exponential.InOut )
				.start();

			new TWEEN.Tween( object.rotation )
				.to( { x: Math.random() *object.rotation.x, y: Math.random() *object.rotation.y, z:Math.random() *object.rotation.z }, Math.random() * duration + duration )
				.easing( TWEEN.Easing.Exponential.InOut )
				.start();

		}

		new TWEEN.Tween( this )
			.to( {}, duration * 2 )
			.onUpdate( render )
			.start();

	}


	//场景切换函数
	/**
	* target 目标对象位置
	* duration 动作持续时间	
	*/
	function transform( targets, duration ) {
		isWatchCard=false;
		TWEEN.removeAll();

		for ( var i = 0; i < objects.length; i ++ ) {

			var object = objects[ i ];
			var target = targets[ i ];

			new TWEEN.Tween( object.position )
				.to( { x: target.position.x, y: target.position.y, z: target.position.z }, Math.random() * duration + duration )
				.easing( TWEEN.Easing.Exponential.InOut )
				.start();

			new TWEEN.Tween( object.rotation )
				.to( { x: target.rotation.x, y: target.rotation.y, z: target.rotation.z }, Math.random() * duration + duration )
				.easing( TWEEN.Easing.Exponential.InOut )
				.start();

		}

		new TWEEN.Tween( this )
			.to( {}, duration * 2 )
			.onUpdate( render )
			.start();

	}

	function onWindowResize() {

		camera.aspect = window.innerWidth / window.innerHeight;
		camera.updateProjectionMatrix();

		renderer.setSize( window.innerWidth, window.innerHeight );

		render();

	}

	function animate() {

		requestAnimationFrame( animate );

		TWEEN.update();

		controls.update();

	}


	//渲染
	function render() {

		if(isWatchCard){
			camera.lookAt(watchObj.position);
		}else{
			var vector = new THREE.Vector3();	
			vector.x=0;
			vector.y=0;
			vector.z=0;
		
			camera.lookAt(vector)
		}
		renderer.render( scene, camera );
		

	}

</script>
</body>
</html>
